Electrochemical in-situ conductivity measurements for thin film of Li(1-x)Mn2O4 spinel

M. Nishizawa, T. Ise, H. Koshika, T. Itoh, I. Uchida

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44 Citations (Scopus)

Abstract

Electrical conductivity of LiMn2O4, which is a promising cathode active material for lithium ion batteries, was monitored in situ during electrochemical lithium extraction and reinsertion reactions in 1 M LiClO4 propylene carbonate solution. The in-situ conductivity measurement was achieved by means of an interdigitated microarray electrode coated with a uniform and dense film of LiMn2O4. The conductivity of Li(1-x)Mn2O4 was found to exhibit a peak-shaped profile as a function of lithium content. The conductivity of Cr3+-doped spinel, LiMn1.95-Cr0.05O4, decreased monotonically with decreasing lithium content. These results are discussed by considering the effects of phase transformation on the conductivity of these materials.

Original languageEnglish
Pages (from-to)1367-1371
Number of pages5
JournalChemistry of Materials
Volume12
Issue number5
DOIs
Publication statusPublished - 2000 Oct 16

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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